These may not be songs you'd usually listen to but as a bassist, I highly recommend having a listen to them.
Maxwell Murders by Rancid
Played by Matt Freeman and a great demonstration of what can be done in punk if you're a genius.
State Of Non Return - Om
Played by Al Cisneros. The bass is the lead instrument in this song. Interesting, Eastern influences, unusual sounds. A bit of a post rock masterpiece.